Lily AllenLily AllenSomething big has hit Lily Allen.

It's the type of thing that gets your tummy a-twirling and your heart a-pumping.

Yes, it's the L thang.

We're talking love, because according to The Sun, she and her ex, Chemical Brothers' Ed Simons, are an item once again.

Now, we've been spying them hanging out recently and there we were thinking it was all friendly and the like.

But according to the paper, they've announced their good news on Facebook, changing their profiles from single to "in a relationship" with each other.

A message from Glastonbury head Emily Eavis reads: "We knew it. What a hullabaloo."

More like what a romantic reunion, we say.